Panies



Feb. 19, 1929.

lE. S. CORNELL, JR

TRAFFIC MARKER FoR PAVRMRNTS www# w.

Filed Feb. 23. 1928 ,{/f/Aln Ill f Patented Feb. 19, 1929.

UNITED STATES PATENT OFFICE.

EDWARD S. CORNELL, JR., OF WATERTOWN, CONNECTICUT, ASSIGNOR TO CHASE COM- PANIES, INC., OF WATERBURY, CONNECTICUT, A CORPORATION.

TRAFFIC MARKER FOR PAVEMENTS.

Application filed February 23, 1928.

This invention relates to an improvement in trailie markers tor pavements and has for its object the production, at a. low cost for manut'acture`v of a simple and highly-visible marker constructed with particular reference to capacity for resisting` displacement.

With this object in View, my invention consists in a. concave-convex sheet-metal tratlic marker characterized by being struck downward to torni a recess in its convex upper face and a supporting shoulder projecting from its concave under tace; an axial passage extending' through the down-struck portion ot the plate; and an anchoring-1nember comprising a shank passing' through the said axial passage into the pavement` and an overhanging head adapted to lit. into the said recess; whereby the rim ot the plate may be embedded itselil in the pavement to prevent lateral displacement of the plate and to prevent its being accidentally pried loose by street-cleaning tools and whereby the overhanging head of the said anchoring-inemher is similarly protected against displacement by street-cleaningl tools.

My invention further consists in a concaveconvex sheet-metal traiiic marker tor pavements characterized as above and having certain other details of construction and combinations ot parts as will be hereinafter described and particularly recited in the claims.

In the accompanying drawings:

Fig. 1 is a top or plan view of a marker as installed in the pavement;

Fig. 2 is a vertical central sectional view on the line 2-2 of Fig. 1, showing the platemember of my improved marker pressed into the pavement and the drive-screw in position preparatory to its being driven through the central passage in the said plate;

Fig. 3 is a corresponding View, showing the drive-screw in place;

Fig. 4L is an edge view of the concavo-conveX plate-member of my improved marker, detached;

Fig. 5 is an underside View thereof; and

Fig. 6 is an enlarged-scale sectional view on the line 6-6 of Fig. 5.

In carrying out my invention, as herein shown, I employ a concavo-convex sheetmetal plate or disk 10 having its central portion downwardly offsetting to form an annular recess 11 in its convex upper tace and a supporting-shoulder 12 project-ing from its concave under face. At equidistant points I Serial No. 256,217.

strike downward from the said shoulder tour anchoring prongs 13 adapted to be embedded, as is also the rim 14 ot the plate, in the surface of the pavement 15 so as to hold the said plate against lateral displacement.

For the purpose of preventing the upward displacement ot the plate, as well as to supplement the prongs 13 and rim 14 in holding it against lateral displacement, I employ a drive-screw 16 having steep-pitch threads 17 and a relatively-large overhanging concaveconvex head 18 snugly .fitting in the recess 11 of the plate in such manner as to cause its convex upper face to complement the curvature ot the upper 'face of the plate 10. The said drive-screw 16 passes downward into the pavement 15 through a central perforation 19 in the said plate, around which the metal is struck downward to form a conical socket 20 tor the accommodation of the sloping shoulder 2l of the said drive-screw.

By providing the concavo-convex sheetmelal plate 10 with the supporting shoulder l2, the same is enabled to resist the pressure ot traiiic without deformation, so that its superior visibility, due to its convex upper face is unimpaired. Furthermore, by virtue ot' the concave form ot the under tace of the plate, its rim lfl is enabled to embed itsel'l:` in the pavement, so as not only to resist lateral displacement but to prevent shovels, etc., of street-cleaners from accidentally prying it up. By sea-ting the head 18 ot' the drivescrew 16 in the recess 11 of the plate, the rim ot the same is also protected from being accidentally pried loose by street-cleaning tools.

I claim:

1. A traiiic marker comprising a sheetmetal plate provided with a passage 'for the reception ot' an anchoring-member; one or more downwardly-project-ing anchoringprongs located adjacent the said passage; and an anchoring-member comprising a shank adapted to pass through the said passage into the pavement and a head adapted in size to overlie the said anchoring-prongs; whereby the said anchoring-prongs may be forced into the pavement concurrently with the shank ot the said anchoring-member by force exerted upon the latter.

2. A tralic marker comprising a sheetmetal plate struck downward to form a recess and provided with a passage intersecting the said recess; one or more downwardly- 2 v ai projecting ancho'ng-prongs Struck downward from the said rocosa adjacent the said passage; and an anChong- Lomher Compriang a shank adapted to passa thlouggh H1@ said passage into the pavemen and a hoad adaptn ed in size to owl'le4 tho said. anchori' fj prongs; whereby the said anchorngqnohgs may be forced into the pavoment Consument- ].y with the shank of the Sad anchoring-memhfel i )roe exerted upon the latter.

'Y ,Qimmy Whoafaof, have signed this mation.

DRUM-MD S. CORNELL, JR. 

